diff --git a/Common/Assemblies/Rjw-Genes.dll b/Common/Assemblies/Rjw-Genes.dll
index c4c89b1..7c86465 100644
Binary files a/Common/Assemblies/Rjw-Genes.dll and b/Common/Assemblies/Rjw-Genes.dll differ
diff --git a/Common/Defs/Xenotypes/Succubus.xml b/Common/Defs/Xenotypes/Succubus.xml
index 66e73b6..b3967c6 100644
--- a/Common/Defs/Xenotypes/Succubus.xml
+++ b/Common/Defs/Xenotypes/Succubus.xml
@@ -28,7 +28,6 @@
         <li>rjw_genes_female_only</li>
         <li>rjw_genes_lifeforce</li>
         <li>rjw_genes_lifeforce_drain</li>
-		<li>rjw_genes_cum_eater</li>
         <li>rjw_genes_vaginal_absorber</li>
         <li>rjw_genes_anal_absorber</li>
 
diff --git a/Source/Genes/Life_Force/Patch_Vanilla_Inheritance_Fertilin.cs b/Source/Genes/Life_Force/Patch_Vanilla_Inheritance_Fertilin.cs
new file mode 100644
index 0000000..94c427f
--- /dev/null
+++ b/Source/Genes/Life_Force/Patch_Vanilla_Inheritance_Fertilin.cs
@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using HarmonyLib;
+using RimWorld;
+using Verse;
+
+namespace RJW_Genes
+{
+    /// <summary>
+    /// This Patch is applied to add a absorption gene for fertilin if it has none, but it does have the fertilin gene
+    /// First tries to get one from the parents else chooses one of them at random
+    /// the genes are determined and "simply added". 
+    /// </summary>
+    [HarmonyPatch(typeof(PregnancyUtility), "GetInheritedGeneSet", new Type[]
+    {
+        typeof(Pawn),
+        typeof(Pawn),
+        //typeof(bool)
+    }
+    )]
+    public static class PatchVanillaPregnancyFertilin
+    {
+        [HarmonyPostfix]
+        public static void InheritedGenes(Pawn father, Pawn mother, ref GeneSet __result)
+        {
+            //Also make a setting for this
+            if (__result.GenesListForReading.Contains(GeneDefOf.rjw_genes_lifeforce))
+            {
+                List<GeneDef> gene_list = __result.GenesListForReading;
+
+                //If no absorption gene get one from the parents, else a random one
+                if(!(gene_list.Contains(GeneDefOf.rjw_genes_drainer) || gene_list.Contains(GeneDefOf.rjw_genes_cum_eater) 
+                    || gene_list.Contains(GeneDefOf.rjw_genes_vaginal_absorber) || gene_list.Contains(GeneDefOf.rjw_genes_anal_absorber)))
+                {
+                    List<GeneDef> absorption_genes_list = new List<GeneDef> { GeneDefOf.rjw_genes_drainer, GeneDefOf.rjw_genes_cum_eater
+                        , GeneDefOf.rjw_genes_vaginal_absorber, GeneDefOf.rjw_genes_anal_absorber };
+                    List<GeneDef> absorption_genes_parents = new List<GeneDef>();
+                    foreach (GeneDef geneDef in absorption_genes_list)
+                    {
+                        if(mother.genes != null && mother.genes.HasGene(geneDef))
+                        {
+                            absorption_genes_parents.Add(geneDef);
+                        }
+                        if (father.genes != null && father.genes.HasGene(geneDef))
+                        {
+                            absorption_genes_parents.Add(geneDef);
+                        }
+                    }
+                    if (!absorption_genes_parents.NullOrEmpty())
+                    {
+                        __result.AddGene(absorption_genes_parents.RandomElement());
+                    }
+                    else
+                    {
+                        __result.AddGene(absorption_genes_list.RandomElement());
+                    }
+                }
+            }       
+        }
+    }
+}
diff --git a/Source/Rjw-Genes.csproj b/Source/Rjw-Genes.csproj
index 165662b..f7ab5e9 100644
--- a/Source/Rjw-Genes.csproj
+++ b/Source/Rjw-Genes.csproj
@@ -141,6 +141,7 @@
     <Compile Include="Genes\Life_Force\LordJob_SuccubusVisit.cs" />
     <Compile Include="Genes\Life_Force\LordToil_Flirt.cs" />
     <Compile Include="Genes\Life_Force\Patch_SexTicks_ChangePsyfocus.cs" />
+    <Compile Include="Genes\Life_Force\Patch_Vanilla_Inheritance_Fertilin.cs" />
     <Compile Include="Genes\Life_Force\ThinkNode_ConditionalCannotInteract.cs" />
     <Compile Include="Genes\Life_Force\ThinkNode_ConditionalLowLifeForce.cs" />
     <Compile Include="Genes\Life_Force\ThinkNode_ConditionalCritcalLifeForce.cs" />